IN CPPHow can we pass arguments to the constructor of a dynamically allocated array of classes?

Question

let entity be a class then,
entity* e_ptr[4]={????};
how to pass args to the class ctors and how to call the methods of the class using the e_ptr?

Answer 1

You are declaring a 2D array here, right?
Now, you may use {} to call individual constructors, but I don't know if they will work for pointers as well.

So if you had :

class e
{
int a,b;
e(int r,int s):a(r),b(s){}
void print() { cout<<a+b<<"\n"; }
};

You could do :

e myarr[4] = { {1,1},{2,2},{3,3} };
// Works for any type.

And then to call the members :

for(int i=0;i<4;i++) myarr[i].print();

Now, in your case the elements are pointers and so the above loop will use a
-> instead of a dot.